53421087 has 8 divisors (see below), whose sum is σ = 71349040. Its totient is φ = 35553600.

The previous prime is 53421079. The next prime is 53421097. The reversal of 53421087 is 78012435.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53421087 - 2³ = 53421079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53421037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13012 + ... + 16617.

It is an arithmetic number, because the mean of its divisors is an integer number (8918630).

Almost surely, 2^53421087 is an apocalyptic number.

53421087 is a deficient number, since it is larger than the sum of its proper divisors (17927953).

53421087 is a wasteful number, since it uses less digits than its factorization.

53421087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30233.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 53421087 is about 7308.9730468787. The cubic root of 53421087 is about 376.6207468320.

The spelling of 53421087 in words is "fifty-three million, four hundred twenty-one thousand, eighty-seven".